Optical scanner



FIG. 1 is a front perspective view of an optical scanner;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a back elevational view thereof;

FIG. 4 is a left-side elevational view thereof.

FIG. 5 is a right-side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The ornamental design for an optical scanner, as shown and described.